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Dielectric relaxation of Ca^++^–vacancy dipoles in KCl + KBr mixed crystals by R. Robert; R. Barboza; G. F. L. Ferreira; M. Ferreira de Souza is a Physics and Astronomy article available to read on EtoBox.

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## Abstract Using dielectric loss and ionic thermo‐current (I.T.C.) techniques the dielectric relaxation of KCl + KBr mixed crystals doped with Ca^++^ was measured. It was found that the activation energy, __H__, for dipole reorientation decreases as the Br^−^ minority anion concentration increases in the KCl + KBr:Ca^++^ mixed crystal. In KBr + KCl:Ca^++^ (Cl^−^ as a minority anion) the activation energy for dipole reorientation increases as the Cl^−^ minority anion increases. In addition to the relaxation peak that displaces with the minority Cl^−^ anion concentration, another one was found in KBr + KCl:Ca^++^, but not in the KCI + KBr:Ca^++^ system where Br^−^ is the minority anion. The experimental results are explained, for minority anion concentration not higher than 10%, in terms of lattice parameter change and of the local effect of the minority anion.

Who reads Dielectric relaxation of Ca^++^–vacancy dipoles in KCl + KBr mixed crystals?

Author

R. Robert; R. Barboza; G. F. L. Ferreira; M. Ferreira de Souza

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Ltd.; Wiley (ISSN 0370-1972)

Published

1973

Language

EN

Field

Physics and Astronomy (Physical Sciences)